Flush valve



De@A 2o', 1927. 1,653,492

W. H. CADWELL ET AL FLUSH VALVE Filed Nov.12. 1924 .Juf

y l2 U MNHN /Z/ 10 es I l v59 INVENTORS 20 wi h'am H Cada/veil.

Charles .U`r0cker 94 John BY# aw ATTORNEY vide a flush valve fat@ . rotary plug, taken along Patented uw. 2c, 1921. Y

UNITED STATES PAT-ENT OFFICE.

WILLIAM: n. cAnwiiLL .um .Tomi or'i,

or wasr Han'ri'cnn, ooiiimc'ricur,

0F NEW BRITAIN, AND CHARLES '.D. CROCnBq.'

ASSIGNOBSTO THE BEATON s CAIDWEIL CONNECTICUT.

FLUSH VALVE.

- kApplication led November 19,1925. Serial No. 749,407.

This invention relates to Hush valves for water-closets and the like, and more particularly to a. flush valve having im roved means for permitting theperiod of ow to be accurate y adjusted. l

One object of this invention is to vproof the double-chamber bypass type in which means are provided for readily cleaning out said by-pass whenever it becomes clogged, without -disassemblng the device. y

A further object is to provide a flush valve of the above nature in which the bypass can be manipulated from the exterior of the valve for cleaning it out or for ad` justing the period of flow without disturb-f ing the interior mechanism.

A further 4object is to provide a device of the above nature which will `be simple in construction, inexpensive to manuacture not likely to get out of order, easy to install and manipulate, compact in size, ornamental in appearance, and very efficient and durable in use.

With these and other objects in view there has been illustrated on' the accompanying drawings one form in which the invention may be conveniently embodied 1n practice. l

Fig.v 1 represents a side sectional view in elevation of the preferred embodiment of flush valve. Y y

Fig. 2 is a front view in elevation of the same, with parts broken away.

Fig. 3 is a view on an enlarged scale of the bj1-pass adjusting device with the parte shown in separated relation.

Fig. 4 is a perspective view of a special orm of tool used in. manipulating the bypass adjusting device. A

Fig. 5 is a cross-sectional view of the the line 5--5 -of Fig.

Referring now to the drawings in which like reference numerals denote corresponding parte throughout the several views,

the an upper outer shell of the flush valve, said shell preferably being substantially frusto-conical in sha The top of the shell -10 is provided with a renumeral 10 indicates duced neck 11 shaped to form a hexagonal y head 12 by means of which the shell may be mani ulated by a suitable wrench, not shown. e lower portion of the'shell 10 is' provided with a cylindrical rim 13, threaded on its interior surface and ladapted to be screwed upon an vupstanding threaded ange 14 provided on the top of a body member lor casing 15.

The casing 15 is provided on one side with an inlet pipe 16 havinga threaded mouth 17 adapted to be screwed upon a water su p1y pipe, not shown. The bottom of th) casing 15 is provided with an outlet member 18 adapted to extend part ,way through a. ilared opening 19 in a threaded neck 20 of.a bottom shell member 21said neck 20 being adapted to be connected to a pipe, not -shown leading to a closet bowl or other device to be iiushed. j

The bottom shell member 21 is rovided at its top edge with a vertical cy indrical rim 22, having interior threads 23, said threaded rim 22 being adapted' to engage a threaded section 24 on the casing 15.

The outlet member 18 extends upwardly within the casing 15 and has agtapered diverging inner surface25 terminating in a constricteddischarge opening 26.i 'By means of this construction, when a stream of water flows through the valve it will ass through the constricted o ening126 and e caused to emerge at a hig passes through the bottom shell 21, a suction willbe created by injector action, in the compartment 27. between the shell 21 and the lower part ofthe casing 15, said suction vbeing communicated to the compartment 28 located insidethe up er shell 10.

n order to form a seat for aA main valve 29, the top of the outlet member 18 terminates vin an annular ring 30, as clearly shown in Fig. 1.

In order to permit the main val' a 29 to,

velocity. vAs the stream flared opening 19 of the,

be lifted from its seat .to allow the water to l flow out through the outlet, said valve 29 is form a seat-for a helical spring 33. Im-4 The space between the diaphragm 31 and ythe casing 15 will hereinafter be designated as the main chamber.

In order to form a control chamber for the flush valve, a cover member 40 rests upon the periphery of the rubber diaphragm 31, said cover member having a rim 41 secured to said casing by a plurality of set screws 42 passing through said rim 41 and diaphragm 31` and screwing into suitable sockets 43 in the casing 15.

In order to form a guide-way -for the tubular portion 32 of the main valve 29. the cover member has a reduced section 44` terminating at its upper end in a cylindrical section 45 of astill further reduced diameter.

The section 45 has a pairof oppositely disposed apertures 46, leading into the upper shell compartment 28.

'When it is desired to open the main valve 29, it will only be necessary to force downwardly a pin 47 on a releasing valve 48. This motion will cause a sphericalvalve surface 49, preferably of rubber, mounted on an enlarged flange 50, to drop below the shoulder 51 on the cover member 40. This will permit a small quantity of water' to escape through the apertures 46, reducing the pres sure in the control chamber and allowing the unbalanced pressure'in the main chamber to force the main valve 29 upwardly. and fiush the closet bowl. The pin 47 will then be released, whereupon the spring 33, which surrounds a de ending pin 52, will force the releasing va veup upon its seat 51. In order to operatelthe releasing valvev just described, the pin 47 is adapted to extend up through an aperture 53 in the top of the reduced section 45 into contact with an inverted'cup-shaped tube 54 having a. flared bottom 55-adapted to fit loosely' in the upper portion of the shell 10.- The top of said tube 54 carries a push button 56 of porcelain or other suitable material. The water which is thus lreleased lfrom the control chamber passes ldown in to the upper shell compartment 28 and thence through a -perforation 57 in vthe 'cover member 40 to a short metal tube 58 in the rubber diaphragm 31, from which it goes through a passage 59 in the casing 15 into the lower shell compartment 28.

vLessines.;

After the flush valve has been operated, in

order to restore the pressure in the control chamber, said chamber is connected to the main chamber by a restricted'passage hereinafter 'termed the by-pass, and through which a small stream of water is permitted to flow until the pressures in said chambers are equalized.

The. main valve will thus be caused to gradually return to its seat and shut off the iushing stream. The preferred 'form ot' bypass herein disclosed, comprises an inclined passage 60 located within an enlarged boss 61 on the inside of the base' of the cover member 40. A

The passage 60 communicates witha short metallic tube 62 pas-sing through the rubber diaphragm 31 and resting on a seat 63 in the casing 15. The tube 62 in turn communicates with a short passage 64 inv t-he casing. said passage 64 leading to a horizontal circular stepped recess 65. The recess 65 pas-ses entirely through the wall of vthe casing 15, and communicates at its `inner end 66 with the main chamber.

An adjustable rotary plug 67 is adapted to tit snugly within'said recess 65,- and said plug comprises a hollow inner stem section 68, an enlarged intermediate section 69. and an outer head section 70, said head section having a slot 71 in its outer face and adapted to lie approximately flush with the outer surface of the casing 15.

The hollow stem section 68 has a longitudinal passage 72 extending to the mid point of the enlarged section 69 where it communicates with a transverse passage 73 passing entirely through said intermediate enlarged section 69. The enlarged section 69 is provided on its outer face, in alinement with the outer extremities oi said transverse passage 73, with a pair of tapered grooves 74 diminishing in depth away from said extremities to the tip portions 75 thereof, as most clearly shown in Fig. 5. The use of said taper-ed grooves permits the by-pass to be continuously adjusted over a very widey llo range, producing a corresponding wide range in the resulting period of flow.

In order to lock the adjusting plug 67 in any desired angular position in the recess v- 65, and also to prevent possibility of leakage around said plug, a packing washer 76 of asbestos or the like, and a threaded bush-v ing 78 may be employed. The washer 76 and bushing 7 8k are fitted around said slotted head 70 and withinv an enlarged threaded .The outer iace ofthe bushing is alsoprovided with a pairof sockets 79 and' 81 adapted to be engaged by the prongs of a suitable l the outer shells or in any way and a screw driver wrench.

In the operation of the ilush valve, the user will first press down,'momentarily, on the push button to reduce the pressure in the control chamber, thereby opening the main valve to permit -the lushin stream to emerge through the outlet. Wien the push button is released, the main valve will remain open until suicient water has passed through the by-pass .to restore the original pressure in the control chamber.'

When it is desired to adjust the flush valve to give a longer or shorter period of ilow, the tool illustrated inr Fig. 4 will preferably be employed. This tool comprises a handle 83 having a spanner wrench 84 atone end 85 on its other end, said handle being apertured at 86 to permit the tool to be hung upon a nail or other convenient support.

In operation, the be rotated, by the counter-clockwise direction, plug 70 will be rotated to the desired adusted 'tion by means of thescrew driver e lock bushing will then be turned back in a clockwise direction as far as it will thereby preventing the lug from 'getout of adjustment an avoiding-'the powbili of leakage.. Y e

One vanof this invention isV that the by-pass ad1usting means for changing the time of flush may be operatedrom the outside of the Hush valver without disturbing anner wrenchV 84 in 'a the interior mechamsm. n

Another advantage is that theri-pass adju means cannot be tampe with by unaut orized persons, as it can only be operated by the use of a screw driver and a special form of Spanner wre Another advantage 'tudinal movement whatever. A Another advantage is that' sur .b ass. lockbushingvswinnrsf yp type and then the removingA mg is am the aliasing pl simply rotates in its without any sli or ongi faces of the adjusting plug arel cylindrical, and hence cannot become wedge in the leasi'xgbody, as was the case with the former adJusting devices having bearinvsurfaces. K Y

vWhile there has been disclosed in this in which the invenspecitication one form tion maybe embodied, it is to be understood that this form is shown for the purpose of illustration only,l and that the invention is not to be limited to the specific disclosure but may be modified and embodied in various other forms without departing from its spirit. Inshort, the invention includes all the modicat'ons and embodiments coming within the scope of the following claims.

Having thus fully described the invention, what is claimed as new, and' for which it is desired to secure Letters Patent, is:

1. In a ush'valve of the two-chamber, a tubular plug adapted to be loc ted inthe by-pass between the two chambers, said. plug having oppositel dis sed openingis in its peri hery, the sur ace o said p ug a jo ining eac of said openings hav- 4mg a pair of taered grooves of gradually `diiiiilllishing ,dep't whereby the flow of water through said by-pass may be minutely adiusted by turning said plug about its axis. b 2. In a flush vlvle oil the1 two-hambr y-passt pe, a tu u ar'p ug ocate in e by-pass bztween the two chambers, said plug having oppositely disposed openings in its periphery, the surface of said plug adjoineach of said openings having a pair of oppositely extending grooves, where y the flow of water through said byass may adjusted by turning said plug a ut its axis.

In testimony whereof, I have aixed my signature to this specification. 4

' WILLIAM H. CADWELL.

In testimony whereof, we have ailixedour signatures 4to this specification.

CHARLES D. CROCKER. JOHN OTT.

or stuck conical. 50 

